Connection Failure with Bluetooth Audio Recording Tool

[Reacurt]

I've been working with the Bluetooth audio recording tool by Tarlogic and encountered an issue. Below are the steps I followed and the resulting error:

Bluetooth audio recording tool by Tarlogic
[I] Avoiding authentication with FC:86:2A:D1:54:03...
[I] Generating shared key...
[C] sudo btmgmt bondable true
hci0 Set Bondable complete, settings: powered ssp br/edr le secure-conn cis-central cis-peripheral

[C] sudo btmgmt pairable true
hci0 Set Bondable complete, settings: powered ssp br/edr le secure-conn cis-central cis-peripheral

[C] sudo btmgmt linksec false
hci0 Set Link Security complete, settings: powered ssp br/edr le secure-conn cis-central cis-peripheral

[C] sudo btmgmt pair -c 3 -t 0 fc:86:2a:d1:54:03
Pairing with FC:86:2A:D1:54:03 (BR/EDR)
hci0 type 7 discovering off
hci0 FC:86:2A:D1:54:03 type BR/EDR connected eir_len 25
hci0 new_link_key FC:86:2A:D1:54:03 type 0x04 pin_len 0 store_hint 0
Paired with FC:86:2A:D1:54:03 (BR/EDR)

[!] Key generated
[I] The device is vulnerable!
[I] Establishing connection...
[C] bluetoothctl --timeout 2 scan on
SetDiscoveryFilter success
Discovery started
[CHG] Device FC:86:2A:D1:54:03 Modalias: bluetooth:v02B0p0000d001F
[CHG] Device FC:86:2A:D1:54:03 UUIDs: 00001101-0000-1000-8000-00805f9b34fb
[CHG] Device FC:86:2A:D1:54:03 UUIDs: 0000110b-0000-1000-8000-00805f9b34fb
[CHG] Device FC:86:2A:D1:54:03 UUIDs: 0000110c-0000-1000-8000-00805f9b34fb
[CHG] Device FC:86:2A:D1:54:03 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:86:2A:D1:54:03 UUIDs: 0000111e-0000-1000-8000-00805f9b34fb
[CHG] Device FC:86:2A:D1:54:03 UUIDs: 00001200-0000-1000-8000-00805f9b34fb
[CHG] Device FC:86:2A:D1:54:03 UUIDs: 00003333-0000-1000-8000-00805f9b34fb
[CHG] Device FC:86:2A:D1:54:03 UUIDs: 0000fd9a-0000-1000-8000-00805f9b34fb
[CHG] Device FC:86:2A:D1:54:03 ServicesResolved: yes
[CHG] Device FC:86:2A:D1:54:03 Paired: yes

[C] bluetoothctl connect fc:86:2a:d1:54:03
Attempting to connect to fc:86:2a:d1:54:03
hci0 device_flags_changed: FC:86:2A:D1:54:03 (BR/EDR)
supp: 0x00000001 curr: 0x00000000
[NEW] Endpoint /org/bluez/hci0/dev_FC_86_2A_D1_54_03/sep1
[NEW] Endpoint /org/bluez/hci0/dev_FC_86_2A_D1_54_03/sep2
[NEW] Endpoint /org/bluez/hci0/dev_FC_86_2A_D1_54_03/sep4
[NEW] Transport /org/bluez/hci0/dev_FC_86_2A_D1_54_03/sep1/fd0
[CHG] Transport /org/bluez/hci0/dev_FC_86_2A_D1_54_03/sep1/fd0 Delay: 0x05dc (1500)
Connection successful

[I] Starting audio recording...
[!] Recording!
[C] pactl set-card-profile bluez_card.FC_86_2A_D1_54_03 headset-head-unit-msbc

Traceback (most recent call last):
File "/home/kali/Desktop/project/BlueSpy-main/BlueSpy.py", line 94, in
main()
File "/home/kali/Desktop/project/BlueSpy-main/BlueSpy.py", line 84, in main
record(target, outfile=args.outfile, verbose=args.verbose)
File "/home/kali/Desktop/project/BlueSpy-main/core.py", line 119, in record
run_and_check(
File "/home/kali/Desktop/project/BlueSpy-main/system.py", line 35, in run_and_check
raise CommandValidationException(cmdline, out)
system.CommandValidationException: ('Error while executing command "pactl set-card-profile bluez_card.FC_86_2A_D1_54_03 headset-head-unit-msbc"', '')

┌──(root㉿kali)-[/home/kali/Desktop/project/BlueSpy-main]
└─# pactl set-card-profile bluez_card.FC_86_2A_D1_54_03 headset-head-unit-msbc
Connection failure: Connection refused
pa_context_connect() failed: Connection refused

It seems that the connection is refused when trying to set the card profile. Any suggestions on how to resolve this issue would be greatly appreciated.